How to run the equivalent of `ros2 launch` in python, so it can be debugged

humble_debug_ros2_launch.py

import launch
import launch_ros
from launch import LaunchService
from launch.frontend import Parser
from launch.launch_description_sources import PythonLaunchDescriptionSource
from launch.utilities import normalize_to_list_of_substitutions
import os

# Absolute path to your launch file
launch_file_path = (
    "/home/peter.mitrano/code/src/p2_4_ros2/p2_4_hardware/launch/debug_jtc.launch.py"
)


def main():
    # Create the launch service
    ls = LaunchService()

    # Load the launch description from the file
    launch_description = PythonLaunchDescriptionSource(
        launch_file_path,
    ).get_launch_description(context=ls.context)

    # Include it in the launch service
    ls.include_launch_description(launch_description)

    # Run the launch service
    out = ls.run()
    return out


if __name__ == "__main__":
    main()